[Scott65]

I'm adding an ethanol content sensor to be able to run E85 as an option, the Continental model specifically. Only major hurdle is that it's lines are 3/8" tubing, factory efi style. Fittings are available to adapt it to A/N lines, so that's no issue. The issue is in trying not to create a restriction. The rest of my supply/return lines are -8, as recommended by the pumps manufacturer. I currently use these -8 lines single in/out, Y'd at the rails to a single port on a 2 port return style regulator. I have no fuel delivery issues currently. My thinking is, if I add a "T" in the current single line to the regulator, pass that fuel through the sensor and into the currently unused port on the regulator, that I can avoid creating a restriction. Essentially I'm passing the same volume of fuel, now through two pathways. I've attached a crude drawing for illustrative purposes. The purple is what would be added everything else, is existing. Red depicts the return side of the rails currently. Any thoughts, or suggestions appreciated.